Combined fluid pressure clutch, brake, and flywheel



M y 20, 1941- E. K. JOHANSEN 2,242,396

COMBINED mm) PRESSURE CLUTCH, BRAKE, AND FLYWHEEL Filed March 5, 1940 5 Sheets-Sheet 1 I jive/1251" VHkGI'Il w/IGIISEIL y 1941- E. K. JOHANS EN 2,242,396

COMBINED FLUID PRESSURE CLUTCH, BRAKE, AND FLYWHEEL Filed March 5, 1940 5 Sheets-Sheet 3 UZZI' y 9 a K. JOHANSEN 2,242,396

COMBINED FLUID PRESSURE CLUTCH, BRAKE, AND FLYWHEEL Filed March 5, 1940 5 Sheets-Sheet 4 v fizz/612707 flm/xwmsen y 20, 1941- E. K. JOHANSEN 2,242,396

COMBINED FLUID PRESSURE CLUTCH, BRAKE, AND FLYWHEEL Filed March 5, 1940 5 Sheets-Sheet 5 Patented May 20, ion

oorNEn ramp reassess omi'ron, BRAKE, AND FLHEEL Application March 5, 1940, Serial No. 322,302

reclaims.

This invention relates to improvements in combined fluid pressure clutch, brake and fly wheel particularly adapted, though not necessarily limitedin use with metal working presses of very high ton capacity.

In presses of this character the clutch, brake and fly wheel are generally located adjacent one side'of the press, and as these elements are of necessity very heavy-in order to perform the required duty, they constitute a large solid heavy revolving mass.

In order heretofore to properly support them it has been necessary to provide bearing brackets which also serve the purpose of providing a stationary means to which the stationary member of the brake has been fastened. These brackets add very materially to the overhanging weight which projects from the press frame and besides occupy a considerable space.

It is'one of the objects of the present inven- I tion to provide a combined clutch, brake and fly wheel of such construction and arrangement that the entire structure will be materially shortened and the overhanging supporting bracket will be dispensed with as the stationary member of the brake will be fastened directly to the outside of the press crown or press frame.

A further object is to provide an improved structure of this character in which the fly wheel will be placed closer to the center of the length of the drive shaft than has heretofore been possible, with the result that the shaft can be journaled in bearings at either end and the fly wheel will be supported by these bearings.

A further object is to place the adjustment means for both the clutch and brake in close proximity to each other and they may be provided with a common lock, at the same time the brake and clutch may be independently adjusted and such adjustment is readily accessible from r the outside of the unit.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combrake mechanism also bination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention and in which Figure 1 is a view in elevation of a .press having a combined clutch, brake and fiy wheel unit constructed in accordance with the principles of this invention applied thereto.

Figure 2 is an enlarged detail vertical sectional view of the unit.

Figure 3 is a'sectional view taken on line 33 Figure 2.

Figure 4 is a sectional view taken on line it-t Figure 2.

Figure 5 is a sectional view taken on line 5-5 Figure 2.

Figure 6 is a sectional view taken on line B-t Figure 2.-

Figure '7 is a sectional view taken on line 1-1 Figure 2.

Referring more particularly to the drawings, the numeral I6 designates generally a press having a reciprocating slide I I3 of any desired size and configuration.

Extending across the crown and journaled in suitable bearings is a shaft it and this shaft projects beyond one side of the crown for a distance sufficient to permit mounting thereon a unit comprising a fly wheel l5 and clutch and brake mechanisms.

A bearing member l6 projects into the crown through one of the walls thereof and is secured in position and is provided with a flange H which latter contacts the outer face of the wall of the crown and is secured in position by means of suitable fastening bolts i8. This hearing it is provided with a recess l9 for a purpose to be set forth.

Secured to the shaft It for rotation therewith is a hub preferably comprising two members 2ll--2i and these sections are respectively provided with circumferential flanges 22-23, the flange 22 comprising a portion of a clutch mechanism to be hereinafter described and the flange 23 of the section 2i comprising a portion of a to be later described. Supported by the hub tween the flanges 22-23 are bearings 2i-25, preferably of the roller type, and upon these bearings the fly wheel !5 is mounted, the hub of the fly wheel being also disposed between the flanges 2223. The fly wheel is spaced a short distance from the wall E3 of the crown and in the space there is provided another element 26 which constitutes a portion of the brake mechanism that co-operates with the flange 23. This brake element 26 is provided with a hub 2lthrough which the shaft i l passes and which hub is secured to the shaftior rotation therewith.

An annular member 28 abuts the outer face of i, base l2 and a crown thus formed and be-.

' also serves to. see

36 which extends overthe brake elements 23 -26 and encompasses them, the flange 36 being provided with a series of teeth 3| of substantial length and with which teeth peripheral teeth 32-a on annular friction elements 32 intermesh so as to hold the elements. 32 against rotation but adapting them for lateral movement with respect to each other and in directions toward and away from the proximate face of the wall of the crown l3. The hub 21 of the brake element 26 is provided with peripheral teeth 33 with which teeth .34 on an annular friction element 35 mesh, the element 35 encompassing the hub and being adapted for rotation with the hub and also for lateral movement in directionsv lengthwise of the axis of the hub..

This element 35 stands between the friction elements 32 and the elements 32 in turn standbetween the brake elements 23-26 so that when the brake elements 2326 are relatively moved towards each other all of the friction elements will be gripped to retard the rotation of the shaft l4 .but when the brake elements 23-26 are relatively moved away from each other the friction elements will be released and the rotation .of the shaft M will not be retarded thereby.

Within the recess IQ of the hub I6 is disposed an annular member 36 having recesses 31 opening through one face thereof. In the hub 21 are also provided recesses 36 which open through one face thereof and register with the recesses 31 in the element 36 so that a coil spring 39 may be seated inthe alined recesses.

Any number of recesses and springs 39 may be employed and these springs tend normally to force the brake elements 26 in a direction toward' the brake element 23 to grip the friction elements 3236 and thereby retard the rotation of the shaft l4.

The hub 21 and the element 36 may be held in their proper relative positions and-against rotation one with respect to the other in any desired or suitable manner such as by means of bolts 46 passing loos'ely through the hub 21 and having a threaded end 4| threaded into a recess in the element 36. Each of the bolts is preferably pro- --vided with a head 42 which moves in a recess 43 in thehub 21. The bolts 46 are of such a length and the heads 42 are so positioned as not to' interfere with the relative lateral movement I of the hub 21 and the brake element 26 with reof bolts 49, and packing material 50 maybe provided between the member 41 and the shaft l4, the member 41 being secured to the shaft H for rotation therewith in any suitable manner such key or spline which latter e the hub 26 of the clutch member 22 and the hub 2| of the brake member 23 to the shaft for rotation therewith.

The member 41 is shaped to form a cylinder 52 in which a piston 53 is adapted to operate, suitable packing 54 being provided for the piston. The packing is held in position by means of a suitable packing gland 55 and the piston is guided as by means of these guide pins are anchored to the piston in any suitable manner such as by means of nuts 53.

The piston 53 is provided witha circumferential flange 59 having peripheral threads 63 and telescoping with the flange is a member 6|, the latter being provided with a flange 62 having openings 63 extending through the periphery thereof. I

The member 6| is adapted to be adjusted with respect to the piston 53 in a manner and for a purpose to be described, by inserting an implement in one of the holes 63 and then rotating the member 6|.

An adjustment member 64 is provided and is threaded upon the flange 53 of the piston which permits of adjustment between the piston 53 and flange 56, thereby giving adjustment to the clutch elements. Fastening bolts 66 may also be 'provided which pass transversely through the flange 62 and the adjustment member 64 for holding these parts against relative adjustment.

Another annular member 61 encompasses the shaft Hand is. provided with a flange 66 that contacts the flange 62, and the fastening bolts 66 also engage this flange 66 so as to lock the members 61-6|65 together. The member 61 constitutesa portion of the clutch mechanism and co-operates with the flange 22 on the section 26 of the clutch mechanism. This member "is provided on its inner periphery with teeth 63 that mesh with teeth 10 on a portion of the members 20 so that it will rotate with the member 26 but will be capable of lateral adjustment with respect thereto. Between the member 61 and the flange 22 of the hub 20 are arranged friction elements 1| which are annular in configuration and are provided on their outer periphery with teeth 12 which engage teeth 13 on an annular member 14, the latter being secured by suitable fastening devices 15 to the fly wheel l5 for rotation therewith.

Intermediatethe friction elements 1| is a friction element 16 which is also annular and encompasses the shaft I4. This element 16 is provided on its inner periphery with teeth 11 which engage the teeth 10 on the clutch element 22. With this construction, when the fly wheel I5 is rotated the friction element 1| will be rotated therewith and with respect to the clutch mem-;

bers 6122 and the friction element 16. When, however, the piston 53 is moved forwardly the friction elements will be pped between the clutch members 61-22 and the fly wheel will be p locked for rotation with the shaft H.

The adjustment ofrthe member 6| with respect to the piston 53 is provided so as-to compensate wear of the friction elements. The movement of the piston 53 and with it the member 6| in one direction is accomplished by fluid pressure operated means, fluid pressure being 'admitted into the cylinder 52 from any suitable source through a passage 16 in the shaft which communicates with a passage 13 and this passage 19 communicateswith a wall of the cylinder. I

This. will render the clutcheffective and will cause the shaft to be rotated by the fly wheel, the latter being driven from any suitable source and in any suitable manner, (not shown).

'When the fluid pressure in the cylinder 52 is reduced thereby rendering it possible to release passage 66 to the the clutch, the piston 53 and the members 6l-Sl will be moved in the opposite direction by means of the springs 39. To that end there is provided any desired number of rods or pins 8! which pass through suitable openings in the members 2il--2i of the respective clutch and brake elements. Any number of these pins or rods may beprovided and one end thereof contacts the face of the hub 21 of the brake member 25. The other end of the pinsor rods contact a collar or annular member 82 which is threaded into the hub of the member 61 and a relative adjustment of the members (SI-82 may be effected, thereby resulting in an adjustment of the brake elements.

This annular member 82 is held against rotation with the member 68 in any desired or suitable manner, such as by means of pins 83 that project into the recesses M in the member at, through a bearing member 85 and into a recess es in the annular member 82. This bearing member 85 may or may not be formed as a part of the member ill, the annular member 82 having bearing upon the member 85.

It is thought that the operation of the brake and clutch will be clearly understood from the foregoing, but briefly stated it is as follows:

The normal tendency of the springs 39 is to apply the brake by forcing the brake member 26 in a direction toward the brake member 23 to clamp --the friction elements 32-35. This operation will occur when the cylinder 52 is relieved of fluid pressure and under such conditions the piston 53, member 6! and member 61 will be forced in a direction away from the clutch member 22, through the medium of the pins or rods ti which engage the member t2, and the clutch will then be released.

When, however, it is desired to apply the clutch and release the brake, fluid pressure is admitted into the cylinder 52. The piston 53 will then be moved forwardly and with it the memberst l-Gl, in directions toward the clutch member 22, thereby clamping the friction elements ii- 76 so as to lock the fly wheel W for rotation with the shaft it. As the piston 53 moves forwardly under fluid pressure forcing members tl-td forwardly, the annular member 82 will be moved forwardly with the result that the pins or rods M will be shifted longitudinally and will move the brake members 2'i26 in a direction away from the brake members 2i-23, against the stress of the springs 39 thereby releasing the friction elements 32-35.

As soon as the fluid pressure is relieved or reduced sufliciently to be overcome by the stress of the springs 39, the reverse operation will take place, that is, the brake will be released and the clutch will be rendered active.

With this improved construction it will be manifest that a very compact unit will be provided and that the brake and clutch mechanism will be disposed in close proximity to each other with the fly wheel therebetweemwith the result that the overhanging rotating mass and supports therefor, necessary in prior structures of this character, will be reduced in length and the weight of the overhanging mass will also be materially reduced. This is rendered possible by reason of the fact that supporting and overhanging brackets heretofore necessary have been dispensed with and this'is rendered possible by reason of the fact that the stationary portion of the brake mechanism which has heretofore been secured or anchored to such overhanging brackets,

is with the present structure anchored or secured directly to'the face of the crown of the press,

At the same time there is provided a very compact unit and the adjustment mechanism to compensate wear in the friction creating portions is freely accessible from the outside of the unit, both the clutch and brake mechanism being adapted for independent adjustment.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is:

1. A press embodying a frame, a driving shaft journaled in the frame and projecting a substantial distance beyond one of the walls of the frame, the shaft beyond the outer face of the frame being unsupported, friction brake mechanism, friction clutch mechanism, both of said mechanisms being supported by the shaft, a fly wheel supported by the shaft intermediate the brake and clutch mechanisms and maintained against movement laterally upon the shaft, and remote from the extremity of the projecting end of the shaft, mechanical means incorporated within said brake and rotatable with a portion of the brake for controlling said brake, and fluid pressure operated means incorporated within and rotatable with a portion of said clutch for controlling it, said fluid pressure operated means operating v in opposition to the said mechanical means.

2. A press embodying a frame; a driving shaft journaled upon the frame, one end of said shaft projecting for a substantial distance beyond one of the walls of the frame, the shaft beyond the outer face of said wall being unsupported, a combined fly wheel, friction brake and friction clutch unit mounted upon the said end of the shaft, a portion of said brake being anchored directly to the outer face of said frame and against rotation with respect thereto, said fly wheel being disposed intermediate the brake and clutch and maintained against lateral movement upon said shaft, means individual to the brake and clutch and respectively incorporated therein and rotatable with the respective parts thereof for rendering them. active, and means separate from and disposed between the clutch and brake for causing them to operate in opposition to each other.

3. A press embodying a frame, a shaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame, the shaft beyond the outer face of said wall being unsupported, a combined fly wheel, friction brake and clutch unit mounted upon the said end of the shaft, and-in proximity to the said frame, said fly wheel being disposed between the brake and clutch and in proximity to both and maintained against lateral movement upon the shaft, means securing a portion of the brake directly to the said frame against rotation with respect thereto, means individual to the brake and clutch and incorporated respectively therein and rotatable with one of the respective elements thereof for rendering them active, and means whereby when either the brake or the clutch is rendered active, the other will be rendered inactive.

.4. A press embodying a frame, a shaft journaledupcn the frame, one end of the shaft projecting for a substantial distance beyond a wall of the several parts, within said wall being unsupported, a combined fly wheel, brake and clutch unit mounted upon the the brake and clutch and in proximity to both,

means securing a portion of the brake directly to the said .frame against rotation with respect thereto, means individual to the brake and clutch for rendering them active and rotatable respectively with one of the elements thereof, and

being bodily incorporated within and rotatable with the element which is controlled thereby.

8. A press embodying a frame, a shaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame, the shaft beyond the outer face of means whereby when either the brake or the 1 clutch is rendered active, the other will be rendered inactive, the last said means embodying an element disposed between and engaging and oper- Y ating upon one of the elements of the clutch and one of the elements of the brake.

5. A press embodying a frame, a shaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame, theshaft beyond the outer face of said ,wall being unsupported, a combined fly wheel, brake and clutch unit mounted upon the said end of the shaft, and in proximity to the said frame, said fly wheel being disposed between the brake and clutch and in proximity to both, means securing a portion of the brake directly to the said frame against rotation with respect thereto, means individual to the brake and clutch and rotatable respectively with one of the respective elements thereof for rendering them active, and means whereby when either the brake or the clutch is rendered active, the other will be rendered inactive, said clutch embodying two members connected together for relative adjustment, one of said members being freely accessible from the outside of said unitfor effecting such relative adjustment of the clutch elements.

6. A press embodying a frame, a shaft journaleduponthe frame, one end of the shaft projecting for a substantial distance beyond a wall ofthe frame, the shaft beyond the outer face of said wall being unsupported, a combined fly wheel, brake and clutch unit mounted upon the said end of the shaft, and in-proximity to the said frame, said fly wheel being disposed between the brake and clutch and 'in proximity to both, means securing a portion of the brake directly to the said frame against rotation with respect thereto, means individual to the brake and clutch and rotatable respectively with one of the respec-, tive elements thereof for rendering them active, and means whereby when either the brake or the I clutch is rendered active, the other will be rendered inactive, said clutch embodying two members connected together for relative adjustment, one of said members being freely accessible from the outside of said unit for effecting relative ad-" justment of the clutch and the brake elements.

'7. A press embodying a frame, a shaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame, the shaft beyond the outer face of said wall being unsupported, a combined fly wheel, friction brake and friction clutch unit mounted upon the said erid of the shaft and in proximity to the said frame, said fly wheel being disposed between the brake and clutch and in proximity to both, means for maintaining a portion of the brake directly against rotation with respect to the frame, means individual to the brake and clutch for rendering them active, and means whereby when either the brake 'or the clutch is rendered active, the other will be rendered inactive, one of the first recited means being fluid pressure operated, the said fluid pressure means said wall being unsupported, a combined fly .wheel, friction brake and friction clutch unit mounted upon the said end of the shaft and in proximity to the said frame, said fly wheel being disposed between the brake and clutch and in proximity to both, means for maintaining a portion of the brake against rotation with respect to the frame, means individual to the brake and clutch for rendering them active, and means extending through the fly wheel and engaging one of the elements of the brake and clutch whereby when either the brake or the clutch is rendered active, the other will be rendered inactive, one of the second recited means being mechanically operated and the other of said means being fluid pressure operated, the said fluid pressure operated means being incorporated within and bodily rotatable with the part controlled thereby.

9. In a press a frame, ashaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame and being unsupported, a combined clutch, brake and fly wheel unit supported by said end of the shaft and in close proximity to said frame, means securing a portion of the brake directly to said frame and against rotation with respect thereto, said brake and clutch being disposed on opposite sides of said fly wheel and both in close proximity thereto, means individual to the brake and clutch for rendering them active, and means common to the brake and clutch for causing them to operate in opposition to each other, the last said means embodying an element extending through the fly'and having contact with one of the elements of both the brake and clutch.

10. In a press a frame, a shaft journaled upon the frame, one end of the shaft projecting for a substantial distance beyond a wall of the frame with respect thereto, said brake and clutch being disposed on opposite sides of said fly wheel and both in close proximity thereto, means individual to the brake and clutch for rendering them active,

and means common to the brake and clutch for causing them to operate in opposition to each other, one of the second recited means embodying a fluid pressure cylinder and piston unit embodied within and rotatable with the friction creating means controlled thereby.

11. As a unitary structure a fly wheel, friction, brake and friction clutch, a shaft upon which said unit is mounted,- said brake .andclutch being disposed on opposite sides of said fly wheeland both in close proximity thereto, means for maintaining one of the elements of the brake against rotation, fluid pressure means incorporated within and operating to' control at will said clutch, said fluid pressure means being bodily rotatable with the clutch element which is controlled thereby, and means separatefrom said clutch and brake and responsive to the operation of said clutch for causing the said brake to operate in opposition to the clutch.

12. As a unitary stru cture a fly wheel, friction clutch and friction brake, a shaft upon which the unit is mounted, said brake and clutch being disposed on opposite sides of the fly wheel and in close proximity thereto, means for maintaining one of the elements of the brake against rotation, fluid pressure actuated means incorporated within the clutch for controlling at will the clutch,

-means tending normally to render the brake site sides of the fly wheel and in close proximity thereto, means for maintaining one of the elements of the brake against rotation, means incorporated within and bodily rotatable with an element of the clutch for controlling at will the said clutch, means tending normally to render the brake active, and means disposed between an element of the clutch and an element of the brake, whereby said brake and clutch will be caused to operate in opposition to each other, the last said means embodying an element extending through the fly wheel and being operable upon by an element of each of the brake and clutch.

EINAR K. JOHANSEN. 

